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Design - Interview Questions and Answers for 'Eci telecom' - 5 question(s) found - Order By Newest

Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews.
  Q1. Differences between abstract class and interface ?Core Java
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Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ).

A class can extend single abstract class whereas it can implement multiple interfaces.

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   Like         Discuss         Correct / Improve     java   classes   abstract class   interfaces     Asked in 65 Companies      basic        frequent


Very frequently asked. Usually followed by questions related to private constructor and synchronized access. Frequently asked in JPMorgan and TCS (Based on 2 feedback)
  Q2. Explain Singleton Design Pattern ?Design
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Ans. http://www.buggybread.com/2014/03/java-design-pattern-singleton-interview.html

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   Like         Discuss         Correct / Improve     java   design pattern   singleton   at&t   ebay  fidelity india  united healthcare india     Asked in 46 Companies      intermediate        frequent


 Q3. Write code for singleton classDesign

Ans. http://javasearch.buggybread.com/CodeSnippets/searchCodeSamples.php?keyword=singleton+class&category=code

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   Like         Discuss         Correct / Improve     singleton  code  coding  design pattern     Asked in 1 Companies      Intermediate        frequent


Very Frequently asked to Senior Software Engineers or Developers.
  Q4. Describe some of the Design Patterns you have used ?Design2016-12-01 16:31:17

Ans. [Open Ended Answer]

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   Like         Discuss         Correct / Improve     design patterns     Asked in 17 Companies      intermediate        frequent


 Q5. Design a Coffee machine using Oops concepts.Design2017-06-13 20:26:14

 This question was recently asked at 'ECI Telecom'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     design  design a coffee machine     Asked in 1 Companies




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